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Contract OI history

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Dec 18, 2026 EXPIRATION

BLSH $45.00 Put

BLSH261218P00045000

Latest saved OI368Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLSH $45.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3931960 2026-10-02: 393 OI2026-10-05: 393 OI2026-10-06: 393 OI2026-10-07: 393 OI2026-10-08: 393 OI2026-10-09: 393 OI2026-10-13: 393 OI2026-10-14: 393 OI2026-10-16: 368 OI2026-10-20: 368 OI2026-10-23: 368 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BLSH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3680
Oct 20, 20263680
Oct 16, 2026368-25
Oct 14, 20263930
Oct 13, 20263930
Oct 09, 20263930
Oct 08, 20263930
Oct 07, 20263930
Oct 06, 20263930
Oct 05, 20263930
Oct 02, 2026393No prior observation